Definition

1. Noun (Astronomy):
   • The chromosphere: A thin layer of the Sun's atmosphere located directly above the photosphere. It is typically studied through spectroscopy and becomes faintly visible to the naked eye as a reddish-pink ring during a total solar eclipse.

Usage Examples

• Noun:
  • Các nhà thiên văn học nghiên cứu sắc cầu để hiểu về từ trường của Mặt Trời. (Astronomers study the chromosphere to understand the Sun's magnetic field.)
  • Trong kỳ nhật thực toàn phần, sắc cầu hiện lên như một vòng ánh sáng màu hồng đỏ. (During a total solar eclipse, the chromosphere appears as a reddish-pink ring of light.)
  • Nhiệt độ của sắc cầu cao hơn so với quang cầu bên dưới nó. (The temperature of the chromosphere is higher than that of the photosphere below it.)

Advanced Usage

• The term is primarily used in specialized, scientific contexts related to solar astronomy and astrophysics.
• It is often discussed in relation to solar phenomena such as spicules (jets of plasma) and solar flares that originate in this layer.

Variants and Related Words

• Quang cầu (n): The photosphere; the visible surface layer of the Sun below the chromosphere.
• Nhật hoa (n): The corona; the outermost layer of the Sun's atmosphere, visible during a total solar eclipse, located above the chromosphere.

Synonyms

• Chromosphere: The direct and only precise English equivalent.

Related Terms (Scientific Context)

• Quang phổ học (Spectroscopy): The primary method for studying the chromosphere outside of eclipses.
• Nhật thực toàn phần (Total solar eclipse): The event during which the chromosphere is briefly visible.
• Vệt Mặt Trời (Sunspot): Features on the photosphere that are connected to magnetic activity influencing the chromosphere.